Questions

Q:

Select the option that correctly matches the contents of the first column with the contents of the second column.

 

A. Elements combine in fixed ratios I. Dalton's atomic theory
B. Atoms are indivisible II. The same number of molecules
C. Sulphate and Oxalate ions are anions, whereas magnesium and III. Law of constant proportions
D. Gram atomic mass of an element and the gram molecular mass of a compound contain IV. Ammonium ions are cations

 

A) A-III, B-II, C-IV, D-I B) A-III, B-I, C-IV, D-II
C) A-III, B-IV, C-I, D-II D) A-I, B-III, C-IV, D-II
 
Answer & Explanation Answer: B) A-III, B-I, C-IV, D-II

Explanation:
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Q:

_____ is the most ductile metal.

A) Ph B) C
C) Au D) Ag
 
Answer & Explanation Answer: C) Au

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Q:

In April 2017, to address growing unemployment, which country has abolished the 457 Visa Programme used by thousands of temporary foreign workers, a majority of them Indians?

A) USA B) Canada
C) Australia D) UK
 
Answer & Explanation Answer: C) Australia

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Q:

A solar eclipse occurs when

A) moon comes in the middle of sun and earth B) sun comes in the middle of moon and earth
C) earth comes in the middle of moon and sun D) All of the above
 
Answer & Explanation Answer: A) moon comes in the middle of sun and earth

Explanation:

A solar eclipse happens when the moon gets in the way of the sun's light and casts its shadow on Earth. Solar eclipses happen when the New Moon comes between the Sun and Earth and blocks out the Sun's rays.

 

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Filed Under: Physics
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Q:

What is a Pepper plant ?

A) Bush B) Shrub
C) Vine D) Tree
 
Answer & Explanation Answer: C) Vine

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Q:

Mars Orbiter Mission (MOM), Mangalyaan was launched in

A) 2013 B) 2014
C) 2015 D) 2016
 
Answer & Explanation Answer: A) 2013

Explanation:

The “Mission Mangalyaan”, also known as the Mars Orbiter Mission (MOM) was launched on 5 November 2013 by the Indian Space Research Organisation (ISRO). It was initially estimated to survive around six months, but it is still active and has captured the seasonal variations of the red planet for two Martian years.

 

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Q:

The salt concentration (measured as salinity in parts per thousand), is less than ______ % in inland waters.

A) 5 B) 20
C) 50 D) 75
 
Answer & Explanation Answer: A) 5

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Q:

Which of the following planets has the highest average density?

A) Jupiter B) Mars
C) Earth D) Mercury
 
Answer & Explanation Answer: D) Mercury

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